Here are the five most common reasons for visa refusal:

• Not enough evidentiary documents
• Missing emails and correspondence from the department requesting further documents generally within 28 days
• False information or fraudulent documents – this could potentially result in 5 years to permanent ban to enter Australia
• Failure to meet health or character requirement
• Failure to upload quality documents may delay and, in some cases, results in refusal of your application.

If you are going to lodge your visa application on your own, then make sure you do it correctly because you don’t want to take a risk on your visa application just because of negligence or idleness.